%0 Generic %1 khostovan2015evolution %A Khostovan, Ali Ahmad %A Sobral, David %A Mobasher, Bahram %A Best, Philip N. %A Smail, Ian %A Stott, John P. %A Hemmati, Shoubaneh %A Nayyeri, Hooshang %D 2015 %K density function luminosity sfr %T Evolution of the H$\beta$+OIII and OII luminosity functions and the OII star-formation history of the Universe up to $z$ ~ 5 from HiZELS %U http://arxiv.org/abs/1503.00004 %X We investigate the evolution of the H$\beta$+OIII and OII luminosity functions from $z$ ~ 0.8 to ~ 5 in multiple redshift slices using data from the High-$z$ Emission Line Survey (HiZELS). This is the first time that the H$\beta$+OIII and OII luminosity functions have been studied at these redshifts in a self-consistent analysis. This is also the largest sample of OII and H$\beta$+OIII emitters (3484 and 3301 emitters, respectively) in this redshift range, with large co-moving volumes ~ $1 10^6$ Mpc$^3$ in two independent volumes (COSMOS and UDS), greatly reducing the effects of cosmic variance. The emitters were selected by a combination of photometric redshift and color-color selections, as well as spectroscopic follow-up, including recent spectroscopic observations using DEIMOS and MOSFIRE on the Keck Telescopes and FMOS on Subaru. We find a strong increase in $L_\star$ and a decrease in $\phi_\star$ with increasing redshift up to $z 2$ and $z 5$ for H$\beta$+OIII and OII emitters, respectively. For H$\beta$+OIII, this evolution then flattens by $z$ ~ 3. We derive the OII star-formation history of the Universe since $z$ ~ 5 and find that the cosmic SFRD rises from $z$ ~ 5 to ~ 3 and then drops towards $z$ ~ 0. We also find that our star-formation history is able to reproduce the evolution of the stellar mass density up to $z$ ~ 5. When comparing the H$\beta$+OIII SFRDs to the OII and H$\alpha$ SFRD measurements in the literature, we find that there is a remarkable agreement, suggesting that the H$\beta$+OIII sample is dominated by star-forming galaxies at high-$z$ rather than AGNs.

@misc{khostovan2015evolution, abstract = {We investigate the evolution of the H$\beta$+[OIII] and [OII] luminosity functions from $z$ ~ 0.8 to ~ 5 in multiple redshift slices using data from the High-$z$ Emission Line Survey (HiZELS). This is the first time that the H$\beta$+[OIII] and [OII] luminosity functions have been studied at these redshifts in a self-consistent analysis. This is also the largest sample of [OII] and H$\beta$+[OIII] emitters (3484 and 3301 emitters, respectively) in this redshift range, with large co-moving volumes ~ $1 \times 10^6$ Mpc$^{3}$ in two independent volumes (COSMOS and UDS), greatly reducing the effects of cosmic variance. The emitters were selected by a combination of photometric redshift and color-color selections, as well as spectroscopic follow-up, including recent spectroscopic observations using DEIMOS and MOSFIRE on the Keck Telescopes and FMOS on Subaru. We find a strong increase in $L_\star$ and a decrease in $\phi_\star$ with increasing redshift up to $z \sim 2$ and $z \sim 5$ for H$\beta$+[OIII] and [OII] emitters, respectively. For H$\beta$+[OIII], this evolution then flattens by $z$ ~ 3. We derive the [OII] star-formation history of the Universe since $z$ ~ 5 and find that the cosmic SFRD rises from $z$ ~ 5 to ~ 3 and then drops towards $z$ ~ 0. We also find that our star-formation history is able to reproduce the evolution of the stellar mass density up to $z$ ~ 5. When comparing the H$\beta$+[OIII] SFRDs to the [OII] and H$\alpha$ SFRD measurements in the literature, we find that there is a remarkable agreement, suggesting that the H$\beta$+[OIII] sample is dominated by star-forming galaxies at high-$z$ rather than AGNs.}, added-at = {2015-03-03T10:01:32.000+0100}, author = {Khostovan, Ali Ahmad and Sobral, David and Mobasher, Bahram and Best, Philip N. and Smail, Ian and Stott, John P. and Hemmati, Shoubaneh and Nayyeri, Hooshang}, biburl = {https://www.bibsonomy.org/bibtex/2e6b704eeb232169317a786b30008f33e/miki}, description = {[1503.00004] Evolution of the H$\beta$+[OIII] and [OII] luminosity functions and the [OII] star-formation history of the Universe up to $z$ ~ 5 from HiZELS}, interhash = {8d2b0eb3be7a967c17e0b8d3125a99d6}, intrahash = {e6b704eeb232169317a786b30008f33e}, keywords = {density function luminosity sfr}, note = {cite arxiv:1503.00004Comment: 23 pages, 14 figures, 7 Tables, submitted to MNRAS}, timestamp = {2015-03-03T10:01:32.000+0100}, title = {Evolution of the H$\beta$+[OIII] and [OII] luminosity functions and the [OII] star-formation history of the Universe up to $z$ ~ 5 from HiZELS}, url = {http://arxiv.org/abs/1503.00004}, year = 2015 }